System - A set of connected things or parts forming a complex whole, in particular. A set of things working together as parts of a mechanism or an interconnecting network.
Systems can be any size - from microelectromechanical (tiny) to enormous (power generating plants)
Process controls - statistics and engineering discipline that deals with the mechanism, architectures, and algorithms for controlling a process. Some examples of controlled processes are:
Controlling the temperature of a water stream by controlling the amount of steam added to the shell of a heat exchanger.
Operating a jacketed reactor isothermally by controlling the mixture of cold water and steam that flows through the jacket of a jacketed reactor.
Maintaining a set ratio of reactants to be added to a reactor by controlling their flow rates.
Controlling the height of fluid in a tank to ensure that it does not overflow.
How stuff works - System dynamics, the study of the behavior of complex systems
the behavior of complex systems over time
internal feedback loops and time delays that affect the behavior of the entire system
stocks and flows
These elements help describe how even seemingly simple systems display baffling nonlinearity.
Control systems - device, or set of devices, that manages, commands, directs or regulates the behavior of other device(s) or system(s).
airplane autopilot
oil refinery
home heating thermostat
car engine cooling
There are of course other ways of controlling a system, such as designing it to mechanically self-regulate. While mechanical regulation is definitely a method of controlling a system, it often isn't lumped in with "control systems".
Failures in Process Control - Catastrophic failures in process control remind us of the importance of control systems and engineering. Bhopal, India Disaster, Three Mile Island Disaster, Texas City Disaster
Sensors and Actuators
Control Systems: Measurement devices
Temperature sensors
Pressure sensors
Level sensors
Flow sensors
Composition sensors
pH and viscosity sensors
Miscellaneous sensors
Valves: types, kinds, and selection
Valves: modeling dynamics
modeling systems, analysis
Simulink
Modelica - open, free library - model mechanical (1D/3D), electrical (analog, digital, machines), thermal, fluid, control systems and hierarchical state machines.
Systems can be any size - from microelectromechanical (tiny) to enormous (power generating plants)
Systems engineering - about the whole process of a project
Process
Process controls - statistics and engineering discipline that deals with the mechanism, architectures, and algorithms for controlling a process. Some examples of controlled processes are:
Control systems - control via an embedded system.
How stuff works - System dynamics, the study of the behavior of complex systems
- the behavior of complex systems over time
- internal feedback loops and time delays that affect the behavior of the entire system
- stocks and flows
These elements help describe how even seemingly simple systems display baffling nonlinearity.Control systems - device, or set of devices, that manages, commands, directs or regulates the behavior of other device(s) or system(s).
There are of course other ways of controlling a system, such as designing it to mechanically self-regulate. While mechanical regulation is definitely a method of controlling a system, it often isn't lumped in with "control systems".
ASME Systems & Design
Failures in Process Control - Catastrophic failures in process control remind us of the importance of control systems and engineering. Bhopal, India Disaster, Three Mile Island Disaster, Texas City Disaster
Sensors and Actuators
modeling systems, analysis
Meet the people in Process Control Engineering
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